With this information, you can calculate the quantity of knots 509 feet per minute is equal to.
¿What is the inverse calculation between 1 knot and 509 feet per minute?
Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.19895598 times 509 feet per minute.
Which is the same to say that 509 feet per minute is 5.0262376 knots.
Five hundred nine feet per minute equals to five knots. *Approximation
A knot is zero times five hundred nine feet per minute. *Approximation